export function isString(obj) {
    return Object.prototype.toString.call(obj) === '[object String]'
}

export function isObject(obj) {
    return Object.prototype.toString.call(obj) === '[object Object]'
}

export function isHtmlElement(node) {
    return node && node.nodeType === Node.ELEMENT_NODE
}

export const isFunction = (functionToCheck) => {
    var getType = {}
    return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]'
}

export const isUndefined = (val) => {
    return val === void 0
}

export const isDefined = (val) => {
    return val !== undefined && val !== null
}

export function isArray(arr) {
    if (Object.prototype.toString.call(arr) === '[object Array]') {
        return true
    }
    return false
}
